| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,205 | 3,644 | 4,968 | |
| 2020 | R | 1,259 | 3,729 | 5,114 | |
| 2016 | R | 1,072 | 3,307 | 4,673 | |
| 2012 | R | 1,469 | 3,195 | 4,773 | |
| 2008 | R | 1,784 | 3,157 | 5,036 | |
| 2004 | R | 1,789 | 3,261 | 5,108 | |
| 2000 | R | 1,831 | 3,066 | 5,115 | |
| 1996 | R | 1,932 | 2,811 | 5,500 | |
| 1992 | R | 2,022 | 2,030 | 5,858 | |
| 1988 | R | 2,560 | 3,140 | 5,790 | |
| 1984 | R | 1,813 | 4,098 | 5,983 | |
| 1980 | R | 1,555 | 4,127 | 6,097 | |
| 1976 | R | 5,366 | 6,187 | 11,860 | |
| 1972 | R | 1,823 | 4,127 | 6,098 | |
| 1968 | R | 1,949 | 3,835 | 6,517 | |
| 1964 | R | 3,334 | 3,432 | 6,822 | |
| 1960 | R | 2,931 | 4,932 | 7,891 | |
| 1956 | R | 2,487 | 5,664 | 8,179 | |
| 1952 | R | 2,215 | 6,851 | 9,092 | |
| 1948 | R | 3,148 | 5,122 | 8,329 | |
| 1944 | R | 2,681 | 6,184 | 8,886 | |
| 1940 | R | 3,588 | 7,286 | 10,931 | |
| 1936 | R | 5,238 | 5,929 | 11,191 | |
| 1932 | D | 5,970 | 4,455 | 10,544 | |
| 1928 | R | 3,329 | 6,918 | 10,316 | |
| 1924 | R | 2,369 | 5,809 | 9,317 | |
| 1920 | R | 2,026 | 5,706 | 7,984 | |
| 1916 | R | 4,275 | 4,581 | 9,147 | |
| 1912 | D | 2,278 | 1,492 | 5,529 | |
| 1908 | R | 2,514 | 3,296 | 5,895 | |
| 1904 | R | 1,564 | 3,530 | 5,337 | |
| 1900 | R | 2,669 | 3,413 | 6,135 | |
| 1896 | R | 2,776 | 3,052 | 5,898 | |
| 1892 | R | 0 | 2,937 | 5,585 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Marshall County's R+49.1 margin in 2024 reflects a pattern common to sparsely populated agricultural counties in the region, where Republican presidential candidates have posted landslide margins for decades.
The Republican margin in Marshall County reached its widest at fifty-three points in 1892. The margin in 2024 was forty-nine points, in line with the county's deep historical pattern.
Marshall County's loyalty is rooted in its place. Median household income of $68,419, a 95% non-Hispanic-white share, and a population of 9,993 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Woodson County and Neosho County.
